/** Generate and return a new session identifier. */
protected String generateSessionId() {
String result = null;
do {
if (result != null) {
duplicates++;
}
result = sessionIdGenerator.generateSessionId();
} while (sessions.containsKey(result));
return result;
}
@Override
protected void startInternal() throws LifecycleException {
// Ensure caches for timing stats are the right size by filling with
// nulls.
while (sessionCreationTiming.size() < TIMING_STATS_CACHE_SIZE) {
sessionCreationTiming.add(null);
}
while (sessionExpirationTiming.size() < TIMING_STATS_CACHE_SIZE) {
sessionExpirationTiming.add(null);
}
sessionIdGenerator = new SessionIdGenerator();
sessionIdGenerator.setJvmRoute(getJvmRoute());
sessionIdGenerator.setSecureRandomAlgorithm(getSecureRandomAlgorithm());
sessionIdGenerator.setSecureRandomClass(getSecureRandomClass());
sessionIdGenerator.setSecureRandomProvider(getSecureRandomProvider());
sessionIdGenerator.setSessionIdLength(getSessionIdLength());
// Force initialization of the random number generator
if (log.isDebugEnabled()) log.debug("Force random number initialization starting");
sessionIdGenerator.generateSessionId();
if (log.isDebugEnabled()) log.debug("Force random number initialization completed");
}